Why do some people show interest in someone when they’re in a relationship than when they’re single?

This may sound like a stupid, but I remember when I was like 21 going on 22, I was in my first real relationship back in 2011. I was happy, in love and whatever. Never had a boyfriend and it was my first one. Young love. I’ve been hit on a couple times when I was in a relationship more than when I was single. I mean I get hit on once in a while but when I was in a relationship I got hit in a lot. I wasn’t the best looking girlfriend or in shape (back the. I thought guys only liked slimmer girls, smaller girls or I needed to be slim, but I was just dumb).

I know it isn’t always that way but it because I was a different person or whatever?

Why do some people show interest in someone when they’re in a relationship than when they’re single?
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